The MILWAUKEE M18 FUEL 4-1/2" / 6" Variable Speed Grinder, Paddle Switch with ONE-KEY Battery Kit is the next advancement in power and performance, generating 13A corded power, fastest cutting, and delivering up to 135 cuts per charge. The Variable Speed Grinder Kit generates 13A corded power, allowing you to complete the toughest grinding and cutting applications all on the M18 Cordless System. The POWERSTATE Brushless Motor delivers 3,000- 9,000 RPM and maximum sustained power to complete the toughest grinding and cutting applications, allowing you to push your cordless angle grinders harder and longer than ever before. REDLINK PLUS Intelligence ensures unmatched levels of performance, protection, and compatibility. The RAPIDSTOP Brake provides stop times under 2 seconds with an abrasive disc. The kit includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. Compatible with ONE-KEY, this grinder wirelessly connects to a smartphone to track and manage the tool, providing you with visibility to where tools are across your network of jobs. Pair with the M18 REDLITHIUM FORGE XC8.0 Battery Pack for HIGH OUTPUT HD12.0 power in a smaller size, and longest life vs REDLITHIUM batteries. The M18 FUEL 4-1/2" / 6" Variable Speed Grinder, Paddle Switch with ONE-KEY Kit includes (2) M18 REDLITHIUM FORGE XC8.0 Battery Packs and (1) M18 & M12 Rapid Charger.